Chimerism (https://homosaurus.org/v3/homoit0002826)
- Term used to describe the variation in which a person is born with two or more different sets of DNA. This can occur when multiple zygotes (such as fraternal twins) combine and develop into one fetus. Sex-chromosome discordant chimerism occurs when at least one embryo with XX chromosomes fuses with at least one embryo with XY chromosomes. A person who develops this way would have sets of both XX and XY chromosomes, or a chromosome pattern of 46XX/46XY, and could have a wide variety of different possible sex characteristics. Many people with chimerism and XX/XY chromosomes have both ovarian and testicular tissue, while others have only testes or only ovaries, and still others have gonadal dysgenesis. Some have noticeable genital differences and others do not.
- http://id.loc.gov/authorities/subjects/sh2011001809
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Chimerism
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